Refine
Year of publication
- 1978 (52) (remove)
Institute
- Fachbereich Medizintechnik und Technomathematik (27)
- Fachbereich Elektrotechnik und Informationstechnik (7)
- Fachbereich Bauingenieurwesen (3)
- Fachbereich Energietechnik (3)
- Fachbereich Maschinenbau und Mechatronik (3)
- Solar-Institut Jülich (3)
- Fachbereich Chemie und Biotechnologie (2)
- Fachbereich Gestaltung (1)
- Fachbereich Luft- und Raumfahrttechnik (1)
- Fachbereich Wirtschaftswissenschaften (1)
Has Fulltext
- no (52) (remove)
Document Type
- Article (41)
- Book (5)
- Conference Proceeding (3)
- Part of a Book (2)
- Doctoral Thesis (1)
It has been observed that carcinogenic polycyclic aromatic hydrocarbons (PAH) are present in the atmosphere. Combustion processes are considered the most important sources for PAH. Among these, the burning of coal produces the highest emission, but in cities with high traffic density and low meteorological exchange activities, vehicle emissions determine the immission situation, especially in narrow streets. For estimating the potential health effects caused by PAH, it is sufficient to characterize the emission of PAH with respect to their physical state, concentrations, and, as far as the particulate phase is concerned, size distribution. The size distribution is important for transport phenomena, inhalation, and deposition in the respiratory tract. These parameters mainly depend on the combustion system, on system operating conditions, on the exhaust system, and on exhaust cooling conditions. At exhaust-gas temperatures in the range of ambient air temperatures, almost the whole emission of PAH is made up of particulate matter.